diff options
| author |   Michael Chan <michael.chan@broadcom.com> | 2019-06-29 11:16:44 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-06-30 16:00:25 -0700 |
| commit | c20dc142dd7b2884b8570eeab323bcd4a84294fa (patch) | |
| tree | e63a7eb997867558489dbfde09421cdc7fa51b65 /drivers/net/ethernet/broadcom | |
| parent | net: dsa: mv88e6xxx: wait after reset deactivation (diff) | |
| download | linux-dev-c20dc142dd7b2884b8570eeab323bcd4a84294fa.tar.xz linux-dev-c20dc142dd7b2884b8570eeab323bcd4a84294fa.zip | |
bnxt_en: Disable bus master during PCI shutdown and driver unload.
Some chips with older firmware can continue to perform DMA read from
context memory even after the memory has been freed. In the PCI shutdown
method, we need to call pci_disable_device() to shutdown DMA to prevent
this DMA before we put the device into D3hot. DMA memory request in
D3hot state will generate PCI fatal error. Similarly, in the driver
remove method, the context memory should only be freed after DMA has
been shutdown for correctness.
Fixes: 98f04cf0f1fc ("bnxt_en: Check context memory requirements from firmware.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index f758b2e0591f..b9bc829aa9da 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -10262,10 +10262,10 @@ static void bnxt_remove_one(struct pci_dev *pdev) bnxt_dcb_free(bp); kfree(bp->edev); bp->edev = NULL; + bnxt_cleanup_pci(bp); bnxt_free_ctx_mem(bp); kfree(bp->ctx); bp->ctx = NULL; - bnxt_cleanup_pci(bp); bnxt_free_port_stats(bp); free_netdev(dev); } @@ -10859,6 +10859,7 @@ static void bnxt_shutdown(struct pci_dev *pdev) if (system_state == SYSTEM_POWER_OFF) { bnxt_clear_int_mode(bp); + pci_disable_device(pdev); pci_wake_from_d3(pdev, bp->wol); pci_set_power_state(pdev, PCI_D3hot); } |